build-test-python.yml

name: Python Bindings
on: [push, pull_request]
jobs:
  build-test-python:
    strategy:
      fail-fast: false
      matrix:
        python-version:
          - '3.9'
          - '3.10'
          - '3.11'
          - '3.12'
        os:
          - ubuntu-24.04
          - ubuntu-22.04
          - ubuntu-20.04
        buildsystem:
          - meson
          - cmake
    runs-on: ${{ matrix.os }}
    steps:
      - name: Setup Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}

      - name: Setup packages on Linux
        run: |
          sudo apt-get update
          sudo apt-get install libzmq3-dev libsocketcan-dev socat

      - name: Setup build system packages on Linux
        run: |
          sudo apt-get install ninja-build ${{ matrix.buildsystem }}

      - name: Checkout
        uses: actions/checkout@v4

      - name: Build libcsp examples
        run: python3 examples/buildall.py --build-system=${{ matrix.buildsystem }}

      - name: Build libcsp with python binding with cmake
        if: ${{ matrix.buildsystem == 'cmake' }}
        run: |
          cmake -GNinja -B builddir -DCSP_ENABLE_PYTHON3_BINDINGS=1 -DCSP_USE_RTABLE=1 && ninja -C builddir

      - name: Install the latest Meson using Pip if Python is 3.12 or later
        # Meson 1.3+ supports Python 3.12 (distutils removed)
        if: ${{ matrix.buildsystem == 'meson' && matrix.python-version == '3.12' }}
        run: |
          pip install meson
          meson --version

      - name: Build libcsp with python binding with meson
        if: ${{ matrix.buildsystem == 'meson' }}
        run: |
          meson setup builddir -Denable_python3_bindings=true -Duse_rtable=true && ninja -C builddir

      - name: Run ZMQ Python binding Test
        run: |
          build/examples/zmqproxy &
          PYTHONPATH=builddir python3 examples/python_bindings_example_server.py -z localhost -a 3 &
          PYTHONPATH=builddir python3 examples/python_bindings_example_client.py -z localhost -s 3 -a 2
          pkill zmqproxy

      - name: Run KISS Python binding Test
        run: |
          socat -d -d -d pty,raw,echo=0,link=/tmp/pty1 pty,raw,echo=0,link=/tmp/pty2 &
          sleep 1
          PYTHONPATH=builddir python3 examples/python_bindings_example_server.py -k /tmp/pty2 -a 1 &
          PYTHONPATH=builddir python3 examples/python_bindings_example_client.py -k /tmp/pty1 -a 2 -s 1
          pkill socat